SU(3) sum rules for charm decay

Yuval Grossman; Dean J. Robinson

doi:10.1007/JHEP04(2013)067

SU(3) sum rules for charm decay

Yuval Grossman, Dean J. Robinson

Cornell University

Research output: Contribution to journal › Article › peer-review

77 Scopus citations

Abstract

We present flavor SU(3) sum rules for D → PP and D → PV decay amplitudes, that are valid to second order in symmetry breaking by the strange quark mass spurion. Decay rate sum rules are also computed to this order. Particular attention is given to sum rules arising from the isospin and U-spin subgroups, the former providing sensitive tests for alternative sources of SU(3) breaking. We apply the latter together with the postulated ΔU = 0 rule for the large penguin picture to predict the ratio and difference of the direct CP asymmetries for D → KK ^* and D → πρ.

Original language	English
Article number	67
Journal	Journal of High Energy Physics
Volume	2013
Issue number	4
DOIs	https://doi.org/10.1007/JHEP04(2013)067
State	Published - 2013
Externally published	Yes

Keywords

CP violation
Standard Model
Sum Rules

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10.1007/JHEP04(2013)067

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AB - We present flavor SU(3) sum rules for D → PP and D → PV decay amplitudes, that are valid to second order in symmetry breaking by the strange quark mass spurion. Decay rate sum rules are also computed to this order. Particular attention is given to sum rules arising from the isospin and U-spin subgroups, the former providing sensitive tests for alternative sources of SU(3) breaking. We apply the latter together with the postulated ΔU = 0 rule for the large penguin picture to predict the ratio and difference of the direct CP asymmetries for D → KK * and D → πρ.

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KW - Standard Model

KW - Sum Rules

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SU(3) sum rules for charm decay

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Keywords

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